Paul Raynor joined the club as assistant manager to Steve Evans in November 2016.
Mr Raynor is a long-serving assistant to Steve Evans, having functioned as the latter's trusted deputy across four clubs over the best part of a decade.
Born in Nottingham, Paul Raynor progressed through the ranks of his hometown club Nottingham Forest as a midfielder.
After leaving Forest, he went on to play for no fewer than 17 clubs, including Huddersfield Town, Swansea City, Cambridge United and Preston North End, as well as a host of non-league clubs, thereby making close to 450 senior appearances.
Raynor's journey into coaching began with Northern Premier League outfit Hednesford Town in the early 2000s, after which he joined Boston United as assistant to Steve Evans.
Since then, the 50-year-old has followed manager Evans to Crawley Town, Rotherham United and Leeds United, before making his way to the Stags.
The highlights of the Raynor-Evans managerial partnership include double promotions with Crawley between 2007 and 2012, and propelling the Millers to the Championship from League Two between 2012 and 2015.
The duo also secured a 13th-place finish for Leeds United in the Championship in 2015/16, coupled with a fine run in the FA Cup, which ended in a fifth round with a defeat against Watford.